Draft-tug



(N0 ModeL) R. B. AYRES.

DRAFT TUG.

No. 314,909. Patented Mar. 31, 1885.

Mentor,

UNITED STATES PATENT OFFICE.

RUBEN B. AYBES, OF ST. LOUIS, MISSOURI.

DRAFT-TU G.

SPECIFICATION forming part of Letters Patent No. 314,909, dated March 31, 1885.

Application filed December 12, 1884. (No model.) 7

To all whom it may concern:

Be it known that I, RUBEN B. AYRES, of the city of St. Louis, State of Missouri, have made a certain new and useful Improvement in Draft-Tugs, of which the following is a full, clear, and exact description, reference being had to the annexed drawings, in which- Figure I is a top View of my draft-tug; Fig. 2, a side view of same; Fig. 3, atransverse vertical section on line 3 3 of Fig. 2; Fig. 4, a top view showing whifiietree in position.

By reference to the drawings, A represents the whiffletree; B, the combined slotted springcasement, whiflietree-bearing, and couplinglink; b, whiflletree-pin; 0, draft pushing-pin; d, shoulder on draft pushing-pin; e e, squared projections on draft pushing-pin; D, spiral spring, and g shoulder at end of spring-casement B.

The main objects of my invention are to prevent the full weight of a loaded vehicle from coming upon the animal pulling at the start, and to prevent a sudden strain upon the vehicle being drawn.

The construction of my invention is as follows: I construct, of any suitable material, a piece corresponding to part marked Bthat is to say, a strong metal casement having a ,link projection, X, at one end and a shoulder, 9, on the inside at the other end. This casement B is provided at top and bottom with corresponding longitudinal slots K K. \Vhiflletree A is hung in part B,and held there by being passed through part B at the joint Y, and a pin, 1), being dropped through slots K K and passing through an opening in whiffletree A. This pin 1), at either end, is provided with end pieces made part of pin or attached to pin in any suitable manner, and these end pieces project over edges of slots onto outside face of casement, as shown in Figs. 1 and 2.

In casement B are the parts which I have designated as draft pushing-pin c, spiral spring D, and shoulder g;

The construction of these several parts and their relative arrangement with each other and with part B is as follows: Draft pushingpin is provided with end pieces, as shown in Figs. 1, 2, and 3, and these end pieces are either made part of the pin at either end or attached to same at either end in any suitable manner. This pin a is kept in position and allowed to slide back and forth by means of its squared projections e e fitting inside between the' frame-work or four sides of casement B, while the necks of pin 0 project at top and bottom through longitudinal slots KK of casement, and the end pieces of pin at either end project over edges of slots onto outside face of the casement, as shown in Figs. 1,2, and 3. Pin a is provided with a shoulder or projection, cl, Figs. 2 and 3. Shoulder 9, made of any suitable shape, is attached to or made part of casement, and is situated inside of casement so as to be immediately opposite the projection 01 of pin 0. Spiral spring D is hung in casement B in the following manner: It encircles and rests upon pro-.

jection d of pin 0 at one end and encircles and rests upon shoulder g at the other, as fully shown in Fig. 2.

The operation of my invention. is as follows: Part B being connected with vehicle by link X, and a strain being exerted on whiffletree A, whiflietree A bears up against pin 1 and pushes pin 0 along in its bearings until projection d of pin 0 abuts against shoulder g. In the meantime spiral spring D is compressed. Instarting, the weight of the vehicle is borne by the spring until projection d bears up against shoulder 5 when the main weight in pulling is borne by shoulder g,- but directly the strain is relaxed spring D, bearing up against pin 0, forces pin a and single-tree A back into their original position.

I claim- 1. In a draft-tug, the combination of the combined slotted spring-casement,whiffletreebearing, and coupling-link B, whiflietree A, pin Z), draft pushing-pin c. spiral spring D, and shoulder g, substantially as described, and for the purposes specified.

2. In a draft-tug, the combination of the combined slotted spring-casement, Whiffletreebearing, and coupling-link B, pin 1), draft pushing-pin c, spiral spring D, and shoulder g, substantially as described, and for the purposes specified.

In testimony whereof Ihave affixed my signature, in presence of two witnesses, this 8th day of November, 1884..

RUBEN B. AYRES.

Witnesses:

PAUL BAKEWELL, FERNANDO SAUTEB. 

